Waste lubricating oil regeneration device

Abstract

The utility model provides a waste lubricating oil regeneration device. The waste lubricating oil regeneration device comprises a settling box, a circulating oil tank and a vacuum oil filter which are communicated in sequence, a filter cover comprising a plurality of magnetic filters is arranged at an oil inlet in the top of the settling box, a plurality of baffle plates are arranged at the bottom of the settling box along the flowing direction of waste lubricating oil, the adjacent baffle plates are fixed on two side walls of the settling box in a staggered manner to form an S-shaped flowing channel, and an electric heating rod is further arranged between the adjacent baffle plates; three overflow ports are formed in the rear end of the settling box in the height direction, each overflow port is communicated to an overflow header pipe through an overflow branch pipe, and the overflow header pipe is connected with an oil inlet of the circulating oil tank; the circulating oil tank is communicated with the vacuum oil filter through an oil feeding pipe and an oil returning pipe; and the circulating oil tank is also provided with an oil discharge port. According to the waste lubricating oil recycling device, solid mechanical impurities, metal impurities and water in waste lubricating oil are effectively removed, and regeneration and reutilization of the waste lubricating oil are achieved.

Description

Technical Field

[0001] The utility model relates to a waste lubricating oil regeneration device, belonging to the technical field of waste oil regeneration. Background Art

[0002] Lubricating oil is a liquid or semi-solid lubricant used in various mechanical equipment to reduce friction, protect machinery and workpieces, and mainly plays roles such as lubrication, auxiliary cooling, rust prevention, cleaning, sealing, and buffering. During the use of lubricating oil, due to friction between mechanical equipment, heat, environmental impurities, etc., the lubricating oil is continuously contaminated. The metal wear particles, dust, moisture, and small molecule colloids precipitated during repeated high-temperature use in the lubricating oil all change its physical and chemical properties, reducing or even losing its lubricating function and becoming waste oil.

[0003] Due to the large total number of equipment in the factory and the long operation time of the equipment, to ensure the normal operation of the equipment, it is necessary to frequently inspect the lubrication situation and replace the lubricating oil with reduced lubrication performance. Therefore, the output of waste lubricating oil is very large. At present, for the treatment of waste lubricating oil in the factory, one method is to directly sell it as waste, but the price is not high and cannot offset the cost of lubricating oil; the other method is to simply filter it and reuse it as lubricating oil. On the one hand, the filtration speed is slow, and the viscosity of the lubricating oil and the colloidal impurities in it will clog the filter screen. On the other hand, since moisture, small molecule colloids, etc. cannot be separated by filtration, even if it is reused as lubricating oil, the time for maintaining its lubricating function is greatly shortened, which instead indirectly increases the lubrication frequency and the working intensity of maintenance personnel.

[0004] Therefore, there is an urgent need for a method to fully separate the impurities in waste lubricating oil and realize the recycling of waste lubricating oil. Content of the Utility Model

[0005] The utility model aims to overcome the drawbacks of the prior art and provides a waste lubricating oil regeneration device to solve the problem of difficult recycling of waste lubricating oil.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0007] A waste lubricating oil regeneration device comprises a sedimentation tank, a circulating oil tank and a vacuum oil filter connected in sequence; a filter cover containing multiple magnetic filters is arranged at the oil inlet on the top of the sedimentation tank, and multiple baffles are arranged at the bottom of the sedimentation tank along the flow direction of the waste lubricating oil, and adjacent baffles are staggered and fixed on the two side walls of the sedimentation tank to form an S-shaped flow channel, and an electric heating rod is also arranged between adjacent baffles; three overflow ports are arranged at the rear end of the sedimentation tank along the height direction, and each overflow port is connected to the overflow main pipe through an overflow branch pipe, and the overflow main pipe is connected to the oil inlet of the circulating oil tank; the circulating oil tank is connected to the oil inlet of the vacuum oil filter through an oil delivery pipe, and the oil outlet of the vacuum oil filter is connected to the circulating oil tank through an oil return pipe; an oil drain port for discharging qualified lubricating oil is also arranged on the circulating oil tank.

[0008] A further improvement of the utility model is that a plurality of slag discharge ports are further arranged at the bottom of the sedimentation box, and the bottom of the sedimentation box is arranged as an inclined surface inclined toward the slag discharge ports.

[0009] A further improvement of the utility model is that the sedimentation box is placed on a fixed bracket so that the height of the overflow port located at the bottom is higher than the height of the oil inlet of the circulating oil tank.

[0010] A further improvement of the utility model is that the overflow ports are located at 1 / 4, 1 / 2 and 3 / 4 of the height of the sedimentation box respectively.

[0011] A further improvement of the utility model is that the circulating oil tank comprises a front oil storage area and a rear oil storage area, and the front oil storage area and the rear oil storage area are separated by a partition provided with oil holes.

[0012] A further improvement of the utility model is that the front oil storage area is connected with the sedimentation box and is connected with the oil inlet of the vacuum oil filter through an oil delivery pipe, and the oil outlet of the vacuum oil filter is connected with the rear oil storage area through an oil return pipe.

[0013] A further improvement of the utility model is that the oil outlet of the front oil storage area is arranged at the top of the side close to the sedimentation box, the oil return port of the rear oil storage area is arranged at the bottom of the side close to the vacuum oil filter, and the oil through hole is arranged at the bottom of the partition away from the oil outlet / oil return port.

[0014] The beneficial effects of the utility model are:

[0015] The utility model provides a waste lubricating oil regeneration device, which effectively removes solid mechanical impurities, metal impurities and moisture in the waste lubricating oil. After being processed by this device, the impurity content and moisture content of the lubricating oil meet the quality standards of ordinary lubricating oil and can be reused as lubricating oil. Through tests, after the regenerated lubricating oil is reused, its effective service time has no obvious difference from that of brand-new lubricating oil; the use of the regenerated lubricating oil has significantly reduced the cost of the factory's lubricating oil, with remarkable effects.

[0016] The utility model adopts a sedimentation tank and a vacuum oil filter for secondary impurity removal, which can effectively remove moisture and impurities in the oil. After heating and filtering through the sedimentation tank, the moisture and impurities in the oil are significantly reduced, and then it enters the vacuum oil filter for secondary impurity removal, which can reduce its load, extend the service life of the filter element of the vacuum oil filter, and enable the lubricating oil to quickly meet the online use requirements.

[0017] The tops of the sedimentation tank and the circulation oil tank of the utility model both adopt an open-top design, which is more convenient for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall connection structure of the utility model;

[0019] Figure 2 is a schematic diagram of the overall internal structure without the tank cover;

[0020] Figure 3 is a schematic diagram of the internal structure of the circulation oil tank;

[0021] In the figure, 1. sedimentation tank, 1-1. filter cover, 1-2. magnetic filter, 1-3. baffle plate, 1-4. electric heating rod, 1-5. slag discharge port, 1-6. first liquid level gauge, 1-7. tank cover, 2. circulation oil tank, 2-1. front oil storage area, 2-2. rear oil storage area, 2-3. partition board, 2-4. oil passing hole, 2-5. second liquid level gauge, 2-6. oil discharge port, 3. vacuum oil filter, 4. fixed support, 5. overflow branch pipe, 6. overflow main pipe, 7. oil delivery pipe, 8. return oil pipe, 9. control valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings of the present invention. Many specific details are set forth in the following description in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0023] The directions or their approximate terms described throughout the present invention, such as "front", "rear", "left", "right", "upper (top)", "lower (bottom)", "inside", "outside", "side", etc., are mainly with reference to the directions of the drawings. Each direction or its approximate terms are only used to assist in the explanation and understanding of the embodiments of the present invention, and are not used to limit the present invention.

[0024] The utility model provides a waste lubricating oil regeneration device, such as Figure 1 , Figure 2 As shown, it includes a sedimentation tank 1, a circulating oil tank 2 and a vacuum oil filter 3 which are connected in sequence. An oil return pipe 8 is also provided between the circulating oil tank 2 and the vacuum oil filter 3. An oil drain port 2-6 for discharging qualified lubricating oil is provided at the bottom of the circulating oil tank 2. The sedimentation tank 1 is used to adsorb, filter and settle mechanical impurities and metal debris and other impurities in the waste lubricating oil, and to preliminarily remove the water in the waste lubricating oil; the vacuum oil filter 3 is used to further remove water and separate impurities from the lubricating oil after the preliminary treatment; the circulating oil tank 2 is used to store and circulate the oil after the preliminary separation.

[0025] As shown in the figure, the sedimentation box 1 is a rectangular box, and an open oil inlet is set on the top of the sedimentation box 1; a filter cover 1-1 is installed at the oil inlet, and the filter cover 1-1 is a rectangular cover with an open bottom that matches the shape of the oil inlet. A plurality of magnetic filters 1-2 are installed in an array on the filter cover 1-1, and the magnetic filter 1-2 can filter out large particles of impurities in the waste lubricating oil and remove iron impurities by strong magnetic adsorption. In this embodiment, a total of ten magnetic filters are set, arranged in two rows.

[0026] A plurality of baffles 1-3 are arranged inside the sedimentation box 1 along the flow direction of the waste lubricating oil. Adjacent baffles 1-3 are staggered and fixed on the two side walls of the sedimentation box 1 to form an S-shaped channel for the oil to pass through. The baffles 1-3 divide the box into multiple sedimentation areas. The first sedimentation area is arranged directly below the filter cover 1-1, and the last sedimentation area is provided with an overflow port connected to the circulating oil tank 2. The waste lubricating oil falls into the first sedimentation area after being filtered by the filter cover 1-1, and then flows slowly in an S shape along the baffles 1-3 to the last sedimentation area; during the flow process, affected by the baffles 1-3, the solid impurities remaining in the waste oil slowly sink and settle at the bottom of the box. An electric heating rod 1-4 is horizontally arranged in each of the sedimentation areas. By heating the waste lubricating oil, its viscosity and consistency can be reduced, thereby promoting the internal circulation of the waste oil in the box, facilitating the full collision and adsorption of fine impurities to form larger particle impurities, and accelerating their sedimentation; at the same time, the fluidity of the waste lubricating oil is improved after heating, so that it can flow smoothly along the baffles 1-3.

[0027] Further, except for the first baffle plate 1-3, the height of the remaining baffle plates 1-3 is not less than 4 / 5 of the height of the sedimentation tank 1 to ensure that the oil content in the sedimentation tank 1 is not less than 4 / 5 of the tank volume. Since the first baffle plate 1-3 is arranged directly below the filter cover 1-1, its height can be appropriately reduced according to the height of the filter cover 1-1.

[0028] Further, the height of the electric heating rod 1-4 from the bottom of the sedimentation tank 1 is not less than 30 mm. On the one hand, it can make the waste lubricating oil evenly heated in the height direction. On the other hand, it can also prevent the heat source from being too close to the bottom and affecting the deposition of impurities.

[0029] Further, a temperature sensor is arranged in the sedimentation tank 1 to monitor the heating temperature of the oil fluid and avoid boiling over. At the same time, to ensure safety during the heating process and convenience for maintenance, the top of the sedimentation tank 1 is set to be open, and a tank cover 1-7 is added at the opening.

[0030] A plurality of slag discharge ports 1-5 are also arranged at the bottom of the sedimentation tank 1. The slag discharge ports 1-5 are usually arranged on one side far from the circuit system of the electric heating rod 1-4, with oil-electric separation, ensuring high safety. To ensure smooth slag discharge, the bottom of the sedimentation tank 1 is set as an inclined plane inclined towards the slag discharge ports 1-5.

[0031] Three overflow ports are arranged along the height direction at the rear end of the sedimentation tank 1. Each overflow port is connected to an overflow main pipe 6 through an overflow branch pipe 5, and the overflow main pipe 6 is connected to the oil inlet of the circulation oil tank 2. Control valves 9 that can be independently controlled are installed on each overflow branch pipe 5 and the overflow main pipe 6. Since the sedimentation of impurities in the oil fluid is carried out from top to bottom, and the sedimentation effect of the upper-layer oil fluid is better, the present utility model particularly sets three overflow ports at different heights. When discharging oil, it is carried out from top to bottom in sequence, which can not only give the lower-layer oil fluid a longer sedimentation time, but also avoid raising the sedimented impurities to the greatest extent and improve the impurity separation effect.

[0032] Further, the positions of the three overflow ports are preferably located at 1 / 4, 1 / 2, and 3 / 4 of the height direction of the sedimentation tank 1.

[0033] It should be emphasized that the sedimentation tank 1 is placed on a fixed bracket 4, so that the height of the lowest overflow port is higher than the height of the oil inlet of the circulation oil tank 2, and the waste lubricating oil in the sedimentation tank 1 can flow into the circulation oil tank 2 from the overflow port under the action of gravity.

[0034] The circulating oil tank 2 includes two oil storage areas at the front and rear. The front oil storage area 2-1 and the rear oil storage area 2-2 are separated by a partition 2-3 provided with an oil passing hole 2-4. The front oil storage area 2-1 is communicated with the sedimentation tank 1 and is communicated with the inlet of the vacuum oil filter 3 through an oil delivery pipe 7. The outlet of the vacuum oil filter 3 is communicated with the inlet of the rear oil storage area 2-2 through a return oil pipe 8. The preliminarily sedimented waste lubricating oil enters the front oil storage area 2-1. After reaching a certain liquid level, it is transported to the vacuum oil filter 3 for further dehydration and impurity removal, and then returned to the rear oil storage area 2-2. Based on the connection between the front oil storage area 2-1 and the rear oil storage area 2-2, the waste lubricating oil can be repeatedly dehydrated and impurity-removed between the circulating oil tank 2 and the vacuum oil filter 3 until the impurity content and water content in the waste lubricating oil meet the use requirements.

[0035] Further, as Figure 3 shown, the outlet of the front oil storage area 2-1 is arranged at the top near the sedimentation tank 1, and the oil return port of the rear oil storage area 2-2 is arranged at the bottom near the vacuum oil filter 3. And the oil passing hole 2-4 of the partition 2-3 is arranged at the bottom on the opposite side of the outlet / return port. Through such an arrangement, the lubricating oil filtered by the vacuum oil filter 3 does not directly mix with the unfiltered lubricating oil when returning, which is beneficial to reducing the working load of the vacuum oil filter 3. At the same time, when the oil liquid circulates between the circulating oil tank 2 and the vacuum oil filter 3, the oil liquid forms a zigzag flow in the circulating oil tank 2 to form a forced circulation, accelerating the mixing of the oil liquid in the front oil storage area 2-1 and the rear oil storage area 2-2.

[0036] A first liquid level gauge 1-6 is arranged on the sedimentation tank 1, and a second liquid level gauge 2-5 is arranged on the circulating oil tank 2 for intuitive observation.

[0037] The working process of the present utility model is as follows:

[0038] Add the waste lubricating oil to the sedimentation tank. Through the strong magnetic adsorption of the magnetic filter, most of the metal impurities in the waste lubricating oil are removed. After entering the sedimentation tank, the waste lubricating oil slowly flows along the baffle plate, and the large particle impurities in the waste oil and some small molecule impurities adsorbed by the large particle impurities are sedimented and separated. And through the heating of the electric heating rod in the sedimentation tank, the free water in the lubricating oil is evaporated.

[0039] After the waste lubricating oil is statically sedimented in the sedimentation tank for 8 hours, the valves of the overflow branch pipes are opened in sequence from top to bottom, and the upper layer oil liquid, the middle layer oil liquid, and the lower layer oil liquid are put into the circulating oil tank in sequence. When the circulating oil tank reaches the specified liquid level, the oil liquid is pumped into the vacuum oil filter to further remove the impurities and dissolved water in the oil liquid. The oil liquid is circulated and filtered several times in the vacuum filter and the circulating oil tank. After sampling and detecting that the cleanliness and water content of the lubricating oil meet the standards, it is discharged from the circulating oil tank and can be directly used as lubricating oil on the production line.

[0040] The above are only the preferred embodiments of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model shall fall within the scope covered by the present utility model.

Claims

1. A waste lubricating oil regeneration device, characterized in that: The invention comprises a sedimentation box (1), a circulating oil box (2) and a vacuum oil filter (3) which are connected in sequence; a filter cover (1-1) containing a plurality of magnetic filters (1-2) is arranged at the oil inlet on the top of the sedimentation box (1); a plurality of baffles (1-3) are arranged at the bottom of the sedimentation box (1) along the flow direction of the waste lubricating oil; adjacent baffles (1-3) are staggeredly fixed on two side walls of the sedimentation box (1) to form an S-shaped flow channel; an electric heating rod (1-4) is also arranged between adjacent baffles (1-3) to prevent the waste lubricating oil from flowing. ); three overflow ports are arranged at the rear end of the sedimentation tank (1) along the height direction, each overflow port is connected to an overflow main pipe (6) through an overflow branch pipe (5), and the overflow main pipe (6) is connected to the oil inlet of the circulating oil tank (2); the circulating oil tank (2) is connected to the oil inlet of the vacuum oil filter (3) through an oil delivery pipe (7), and the oil outlet of the vacuum oil filter (3) is connected to the circulating oil tank (2) through an oil return pipe (8); and an oil drain port (2-6) for discharging qualified lubricating oil is also arranged on the circulating oil tank (2).

2. A waste lubricating oil regeneration device according to claim 1, characterized in that: The bottom of the sedimentation box (1) is also provided with a plurality of slag discharge ports (1-5), and the bottom of the sedimentation box (1) is provided as an inclined surface inclined towards the slag discharge ports (1-5).

3. The waste lubricating oil regeneration device according to claim 1, characterized in that: The sedimentation tank (1) is placed on a fixed bracket (4) so ​​that the height of the overflow port located at the bottom is higher than the height of the oil inlet of the circulating oil tank (2).

4. A waste lubricating oil regeneration device according to claim 3, characterized in that: The overflow ports are located at 1 / 4, 1 / 2 and 3 / 4 of the height of the sedimentation box (1) respectively.

5. The waste lubricating oil regeneration device according to claim 1, characterized in that: The circulating oil tank (2) comprises a front oil storage area (2-1) and a rear oil storage area (2-2), and the front oil storage area (2-1) and the rear oil storage area (2-2) are separated by a partition plate (2-3) provided with an oil through hole (2-4).

6. A waste lubricating oil regeneration device according to claim 5, characterized in that: The front oil storage area (2-1) is connected to the sedimentation tank (1) and is connected to the oil inlet of the vacuum oil filter (3) through an oil delivery pipe (7); the oil outlet of the vacuum oil filter (3) is connected to the rear oil storage area (2-2) through an oil return pipe (8).

7. A waste lubricating oil regeneration device according to claim 6, characterized in that: The oil outlet of the front oil storage area (2-1) is arranged at the top of the side close to the sedimentation tank (1), the oil return port of the rear oil storage area (2-2) is arranged at the bottom of the side close to the vacuum oil filter (3), and the oil hole (2-4) is arranged at the bottom of the partition (2-3) on the side away from the oil outlet / oil return port.

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